Electrically-controlled meter system.



H..P. GLAUSBN.

ELEGTRICALLY CONTROLLED METER SYSTEM.

AFPLIOATIO-N FILED NOV. 25, 1904:.

Patented July 20, 1909.

2 BEBETSfSHEET 1.

www

i H. P. GLAUSEN. ELBCTRICALLY CONTROLLED METER SYSTEM.

' APPLIUATION rrLnnNov. 25, 1904. Patented July 20, 1909. 2 SEHEN-SHEET 2.

N25 rss2 T 4all 'whom it may concern: Y

,PATENT oEEioE.

HENRY P. GLAUSEN, OF CHICAGO, ILLINOIS..

ELEoTRrcALLY-GONTROLLED METER SYSTEM.

Application alea Novemb'er 25, 1904. serial No. 234,244.

Be it known that I, HENRY P. CLAIUS'EN,

a citizen' of the United States, residing. at

Chicago,'in the county of Cook and 'State of Illinois, have invented certain `new and useful Improvements inlElectricall -Con- .trolled Meter Systems, of which the ollow ing isa specification;

This invention relates to improvements in electrically controlled meter systems, and' referslmore specifically to `a system offthe character referred to, adapted for controlling a call meter at the `subscriloers stationin either an automatic or manual switchboard telephone system. z f

` The salient object' ofthe invention is to' provide in conjunctionwith an' automatic" telephone systenne. e., a telephone system Vso ` ing ot a single circuit, but on the contrary 1s actuated by any one'of several distinctin which one subscriber Secures connection with any other belonging to the same eft-v change through the medium of an automatic electric switch, an electrically controlled Other objects of the invention are to pro-l vide in such a system` means whereby the calling subscriber is permitted to first ascer'# tain whether or not the party called'r'esponds to the call, before he is compelled to record V his call upon the register;"to provide in such a system means whereby the effective operation of the meter controlling nechanisrriis not dependent upona single closing" or openclosings or openings of one or more circuits; to provide in such a system means operating to automatically'restore the suloscriloers` set to its normal condition, 'in which it is receptiye to an incoming call, 'upon the restor ing of the receiver to the 'switchdiook or other act of the 4subscriber which replaces the accessories of his set in their normal pol. sition; to so construct and arrange the meter controlling 'system as' to. avoid interference with' the 'normal 'operation ofthe 'telephone system, or,'.in other -woitds ,so"as to avoid lthe necessity of additional manual operation, other than thelmerejpressing of a button or equivalent 'act 'to operate the tally device; to

provide a system ofthe charzmter referred to `Whicl1,`in its broader sense, is ndt confined in its applic'f'itionl to any'particular telephone Specification of Letters Patent. i i

Patented :muy amigos.

-embodiment or use in connection with most if not alltelephonesystems in use; to prolvide ina system, ofthe character referred yto,rmeans which differentiates rom'or distinguishes ybetween those acts of the subscriber in callingV for a connectionand in answering. a call, so that the meter controlling mechanism in no Wise 'interferes Vwith the subscriber whenvhe'responds'to a 'call from anotherstationbut does prohibit 'his effectual-'usent' his telephone Vwhen he e'ccrds thefcall; to provide means whereby the'ltalking connections of the calling subscribers set are disabledin .the lact-ot projecting 'acall for connection, associated with lstored to effective conditiomwithout necessitating the recording ot' a call on the register, when theattempt to get a'connection has been ineffectualyand in general'to provide a simple', practicalv and eimicent system` of the'chara'cter referredv to. 7

' The invention consists in the matters here- `inafter `ldescrib'ed, andfmoreA particularly 'pointed out in the appended claims, and will be readily understdod `from the following description, reference heilig hadto the accompanying drawings, in which-f' Figure l `is a diagrammatic View showing the complete electrical connectionat a subscribers station, and'so mnclrof the mechanismA of the subscribers setas'isnecessary to a fnlluinderstandin'g ofA the invention; Fig.' 2 is a.. diagrammatioview showing a i conventionalV arrangement of the exchange circuit connections and apparatus of one automatic Asystem.' in common use, and an operators reading set associated therewith, 4 The invention is herein shown as applied Wish to-fcall another subscriber, unless,l hemeansY whereby thesubscriber-sect Ais re to al telephone lsystem now infcommon use,

ment, l? designates the switch-lio`oli, which,

`as usuahis pivotally mounted `to rise and 'fall-when't'he i'ec'eiverQI is l'ifted'from or 'placed `upon the switch-hook, l3 designates a main Shaft rfotatively vjournaledin the main frame and carrying upon its outer end a linger lever et provided witha series of lingerholes 5 correspondingto the digits, 6 designates a switch cam wheel mounted upon and moving with the main shaft, and'7 a coutactactuating arm likewise mounted upon the main shaft and controlling certain contacts as will hereinafter appear.

. 8, i) and 10 respectively designate three contact strips which comprise what may be termed the switching impulse contacts; the contact- -8 being connected with what is commonly A4designated the vertical side of the main line corresponding to the left main line, the contact- 9 being connected with thel rotary or right-main line, and-the contact 10 being located between the other two and connected with an insulated part 11 of the frame and with a local conductor which connects with various parts of the set, as will hereinafter appear. I

The contact device l() constitutes, a member through Vwhich various elrcuits are Vgrounded at the subscribers station, and to this end the insulated member 11 isprovided with an anvil or back contact 11 over which is arranged to'lie1 a spring strip 11; the latter being insulated from` the frame and connected to round by means of a conductor 12. Normalvyand while the switch-hook isdown the spring 11: is held in open position. The switch-hook as it rises lifts the v detent, .and for this purpose the switch-hook frame is provided with an' arm-11b which engages a projection 11c on the detent: The spring 11 is provided with twoinsulated studs, 11d and 11e; the former' adapted to engage the end of the detent 11a and the latter being normallyengaged by the arm 11b when the switch-hook is down. As `the switch-hook rises and the arm l1b passes out of engagement with the spring die latter passes into bearingwith the detent, andas the vswitch-hook approaches the limit ofiits upper movement and lifts the detent the insulating stud 11l1 slides upon the detent to a position where a slight further raising of the detent will permit it to slip off and thus effect `the closingl of the spring contact. This slight further lifting of the. detent is accomplished upon the rst movementof the finger lever; the contact arm 7 beingto this end provided with ar stud 1lt which engages the upder edge of the detent and imparts the slight lifting movement thereto.

lit-will be understood from the foregoing that the subscribers instrument is not grounded until he actually begins to operate his=nger lever. In other Words, the act of answering a call by lifting his receiver from theswitch-hook does not ground his instrument andV this 'is a feature of importance as will appear later. f '13, 14` and 15 respectively designate a second system of three contacts controlled 'by a ber 1.7 is formed as a part of an arm 18 upon j a frame member 19 connected to and moving with the switch-hook.v The contact 13 connects to frame, as by a conductor 20, and in this way is adapted to) be placed in circuit with the vertical side. The contact 15 is connected through a conductor 21 with a conductor 95and is thus placed in circuit with the rotary side of the system, while the contact 14 connects with ay normally open back contact device 23, concerned in the control of the register, as will hereinafter apear. p 24, 25, 26, 27 and 28 respectively designate a system of contacts under the joint control of the arm 7 mounted on the' main shaft, and a somewhat similar arm 29 formed as an extension of the framey member 19 of the switch-hook; the arrangement being such that the lifting of the switch-hook closes the local primary or talking-circuit controlled by contacts 27 and 28, andsimultaneously closes the normally open circuit controlled by the contacts"2et and 25, which contacts 24 and 25- are however again separated whenever the finger lever 4 is operated kto move the arm'7 out of its normal 1position. The contacts 25 and 26 are connected to' move together by means of an insulating block 30, and openingmovement is imparted to the contact 28 through an insulating stud 31 carried by the contact 26 'which is depressed by the arm 29.

B designates asa whole the meter or subscribers register, and C the relay which controls the meter. Only so much of the register is shown as is necessary to understand the applieationof the invention; it

being understood that any suitable form' of register-may be employed so long as it embodies as one of itsfeatures a manually operated member whereby the tallies are recorded and the actuation of which serves to close and open certain contacts, vvas will bev hereinafter described.

Describing the. parts shown, 32, 33, 34 and 35 designate a.series of counter members journaledupon aA common shaft 36 and interconnected in any usual Wayso as t-transfer the count from the units counter on through the series, by denominations. Concerning the register it may be noted, that each counter-wheel is provided upon ,its

periphery with `a circumferential series of contact lprojections 37; these projections be- 111g arranged in longitudinally extending groups, each of .which groups miiy correspond to one of the digits of the decimal systenA of' notation. Connected with the units counter is a ratchet 38 which is acted upon 4by a inanually operable push-bar 39 in such manner as to step the `.units counter forward step by step.

AdjacentI to and parallel with the series ot' counter-wheels is arranged a traveling transmitting mechanism7 by means of which an electrical reading ot' the register may be ett'ected. `This mechanism comprises a spirally grooved shaft 40V upon which is operatively mounted a traveler. 4l, consisting of a block of insulating material operatively connected with the spiral groove 42 ot the shaft 40 and carrying a vibratory y contactl lever 43 pivoted at its angle 44, and

' carrying at-its engaging end al contact device 45. This in turn pivoted upon the lever so as to vibrate idly during movement f5' in one direction ot the traveler but held by a vstud 4o soas to impart positive movement to the vibratory lever upon the return movement of thetraveler as the Contact device 45 engages the series of contact projectionsV 37 which may at that timehappen to be 1i register' therewith. The end of the vibratory lever remote from the Contact .device 45 carries a contact. screw 47 which engagesA a spring contact strip 48 connected to ground :25. by a conductor 70. The'. strip 48 also forces another spring 49 into bearing with a cooperative spring 49 the springs 49 and 49 being constructed to tendto open normally and insulated 4from spring 48.-

tixed Vstud 50.01;' insulating material enga-ges the spring 49 when the traveler is in its normal retracted position and holds saidspring in closed contact with spring 49 it being understood' that as' 'soon as the traveler starts open. The shaft is actuated, bymeans of a crank-handle 51, to move the travelerY forwardly or away from its normal position, and` a coiled spring 52,*acting upon the shaft 40 40, returns the travelcr'to its normal position when the crank-han'dleis released In order to hold the traveler in non-rotative relation to the shaft 40 a guide 53 is arranged to ent-end' parallel with -said .shaft andthe traveler has sliding engagement with this ,.guidc..

The manually operable. push bar 39 controls a set of contacts designatedmespectively. l 54, '55, 5(3 and 57. These contacts are 50 shi'tted by 'a lug 58 upon the member 39T The relay' C. comprises va cutting-out magnet 59 and its armatureGO-and a restore,

ing magnet'tl and armature 62; these two magnets being `arranged in such relation to cach other that the armature (30 constitutes a latchmember and the armature 62 a retaining member .which is adapted to hold V'the clutch or armature, (S0 in closed position. The relay C is shown diagrammaticallymo attempt being made to show the correct mechanical construction of the same but.k

only the-electrical relation -ot' parts. As

shown,A the frame member 63 of the cutting-Y out relay supports the core ofthe `magnet 59 65 and forms a suitable support upon which the `forwardly along the shat40 these'contacts.

armature 60 is pivoted; while the frame 64 of the restoring relay vsimilarly supports the j corea of its magnet and forms a pivotal support for thev armature (52. Each armature is normally held in open position by means ot' a retracting spring as indicated at 65 and 66,'respectively; the armature G0 being normally held in engagement with a back contact device (57' while the armature 62 engages a back stop 68. The frame G4 is connected 75 to 'ground as will hereinafter appear, and the vibratory contact lever 43 of the register is also connected to ground at G9 through af flexible conductor 70 which permits the necessary movement of the`travele1x 8o Describing now the various/local circuits brought into use in the operation of the system in so far as they are concerned iir the present invention, it may be first explained that the user of an automatic telephone of the type herein shown7 when he desires to make a call7 must first remove the receiver from th'e hook-switch and thus unlock the l.

-mechanism so that the linger lever may be4 operated. The raising-of the hook-switch'eo closes the circuit between contacts 24 and 25 and between contacts 27 and 28, and also places spring contact l1 in condition to be grounded upon the rst movement of the linger lever all, as hereinbefore described.

The operator now proceeds tospell out thef number called for by oscillating the finger switch 4. .As the linger switch is oseillated` forwardly by-placing the fing-erin a. given one of the apertures 5 thereotl and bringing 100 it `forwardly until the finger is arrested by the stopv 5 two wing-like cam-extensions 8 and 9l formed integrally with thecontact strips 8 and 9, respectively, are engagedby corresponding switch cam projections 6 and' 105 6 carried by the switch' cam These cam projections 6,- and are so :disposed that they oscillate the respective wipers 8 and 9 I idly during the forwardfstroke of the finger lever-that is to say, they move the contacts y of the finger lever, however, each one ofthe' cam projections' (S which has been carried past the' wi er 9 enginnwe tt 4latter` forces 115 l it inwardlv and closes il cuir. with the contact 10 so that the rotary side of thermain line is closed at this point and :thus grounded through spring ll a number of times'corresponding to the number of cam projections G which are thus moved past the wiper 9. As the finger lever approaches the limit'of its return movement theycam projection (5 y engages' the wiper SIand forces the contact 8 into engagement with the contact 10, thus 125 closing the left `or vertical vtelde of the main line to ground once. At central the `automatic switch which eiiectsgtlieselecting i of the subscribers line being called,- coinprises switch mechanismwhich `is properly responsive to the two grounded circuits closed through the rotary and' vertical sides of the main line,respectively, these impulses operating to, actuate the select or switch in such manner as to secure line connections -with the called party. The final act of securing a connection, as automatic telephones are ordinarily used, is to ring the l called subscribers bell thus calling him to his instrument. Ringing current is sent through the called-subscribers instrument by-pushing a push-button 71, which forces a contact spring 72,.no'rmally resting in bearing witha back contact 73, into engagement vertical cepted form of arranging .the circuits and mechanism Aof an automatic Strowger eX- change'switch adapted to cooperate with the subscribers set hereinbefore described in enabling the subscriber to automatically sev cure connections with other subscribers belonging to the same exchange. This diagram in the diagran maybe considered as conventionah'it being understood that the particular switch mechvanism at central, in common with the particular form of subscrlbers set are alike lmmaterial so long as they are adapted for` the incorporation therewith of those special features pertaining to and adapted to carry out the present invention.

In Fig. 2 V4 and R, respectively,idesignate the vertical and rotary main lines leading into the exchange from the calling subscribers station, VR and RR, respectivelydesignate the vertical relay each connected to lmpedance coils, PM

relay and rot-ary Oround. at 75 through designates a priva-te .1nagnet, la, 2a, 3a and 4% side switches' connected to move together by means of an actuating rod 76 acted upon by the private magnet, and each adapted to be shifted into either of three' positions, as clearly indicated VM designates a vert-ical magnet grounded at 77 through a battery 77 and operating through a'ratchet mechanism to lift the main switch member Sstep by step.

y, RM designates arotary magnet acting on the switch member S to rotate the latter sIep -by step, likewise grounded at 78, -and- 1 k M designates a release magnet which operlates to release the switch member S and allows the latter to return to normal, this magnet being also groundedy atv 79 through a battery 78.

GR designates .a generator relay. grounded I at 80 through a battery 81, and Gen desig- 654 nates a generator operating to throw ringing current on the line when the is energized.

PV, V W' and RW, respectively, designate a private Wiper, `a vertical wiper and a rotary wiper, all of which are controlled and operated by the main switch member S, to eoperate with banks of contacts. The

with the rotary and vertical banks are indicated at V and R. It will be understood that the called subscribers set is identical vwith that of the calling subscriber, and that whenasubscriber is called by the ringing of his bell his hook-switch will, of course, be down.

1 The operation of thesystem and the circuits involved may be described and traced as follows: The callingsubscriber lifts his receiver from the hook-switch, thus unlocking the linger lever mechanism and placing by the rst movement lof the finger lever as hereinbefore described. He next spells out described and in so doing the iirst movement During the return` movement of the nger lever, followinor ythe forward movement of the latter, the vertical side of the main line is grounded through contacts 8 and l0, and current flowing from central over the vertical side passes to lground over a circuit whichv may be traced as follows: from contaet8 to the insulated portion of contact 10, thence over a conductor 82 to spring` contact 56 controlled by the push butthence over a conductor 83 to and through over conductor 84 to that part ofthe contact device 10 which is in electrical connection over the lconductor 12. Current through this circuit obviously energizes magnet 59, draws down its armature 60 thus opening a circuit at back contact 67 and latching the armature into engagement with the-.detent armature 62. The back contact 67 controls the talking. circuit, `which may be traced from said contact by conductor 85 to battery 8G,.thence to' transmitter 87, primary coil 88, contact devices 27 and 28, and 'thence by'con- `ductor 89 back to the armature 60.

ing thetalking coil obviously prevents the calling subscriber from talking with the party called until talking connections are restored,v which is accomplished-by energizing the releasing magnet of the controlling relay as will scriber having spelled out the number wanted by means of' his finger lever and secured connection with the called for subscriber.'next calls 4the latter to his instrument by pushing his ringing button 7l.

This ringing circuit is so arranged that it line terminals of 'one subscriber connected the spring 11". in condition to be grounded of the lever places spring ll to ground.=

generator relay the numeral by operating the finger lever as ice vton of the register, thence to back contact'57`. i

the windings of the magnet 59,- thence back ,i

withthe spring 11, and thence to ground Openhereinafter appear. The subi likewise energizes -the cutting out magnet oftnt controlling relay in order to -render more certain the operation of the latter, and this ringing circuit may be traced as'vfollows: from the vertical side of the main line to aI conductor 90 and by the latter to` contacts 21 and 25,'thence through the push button spring 72 to front contact 74, thence over conductor 91 to contact spring '56 and back contact 57, thence over conductor 83 to' and through the Vcuttingout magnet of the controlling relay and to ground as before. The tact that the controlling' relay has opened the talking circuit does not prevent thercall ing subscriber from hearing the called subscriber when he answers, since the Icircuit througlrthe calling subscribers receiver has remained undisturbed; the circuit through the receiver and secondary coil may be tracedfrom the vertical side over con ductor 90, contacts 24 and 25, push button spring 72, back contact 73 to a conductor 92,

.which extends through-the secondary coil 93 and receiver 941:, and thence to spring 49 on the traveler of the register.. Spring 49h01'- mally engages spring 49 and from the latter a conductor95 leads back tothe rotary side of themain line, thus completing the circuit. The calling subscriber, having been answered by the called subscriber, is now sure of his connection, but before conversa.n tion can take place he .must restore the talking circuitthrough his transmitter, and this he does by pushing the push button 239 of the toll register. As the push button 39 is dcpressed its lug 58 engages the pair of 'contacts 5.) and 56 opening atv back contact 57 and closing at front Contact 54. This closes the circuit through the restoring magnet G1l of the controlling relay, which may he traced as follows: from local battery Sti and con ductor 85 to a conductor'flt, which `leads to spring controlled by the register push button, thence to front contact 54. thence over a conductor 97 to and through the windings of the restoring magnet. thence to frame of the relay, and `from this trame back to the battery `over conductor b9 and the rest of the talking circuit.' llnergizing magnet (31 trips `She latch-armuture (30 and allows the latter to Jose 'the talking circuit at back contact. ($7.

It will, et course, sometimes happen that the called subscriber is alreaoy connected withanother line when a ven subscriber endeavors to get eoi'mection with him. and in suchevent the switch mechanism at central is so arranged asl to automatically throw into the calling. subscribers circuit a. buzzer or other signal ordinarily termed `the busy signal. vlVhen a calling subscriber finds the line ot' the party wantedf" nusy i, he, of course, should not be compelled to register such ineffectual call, but it will be remembered that he has already placed the condition.

T he restoring of a relay wit-hout registering. a call is automatically effected by the return movement of the hook switch to its normal position when the receiver is replaced thereon; thecircut for accomplishing this being traced as follows: As the hook switch descends the cam member 17 upon the fra-me thereof engages the cani 16 on spring contact 1 3 'and orcesthe three springs 13, 15 and 14 into engagement with each other. This momentarily closes the circuit between line 95 of the rotary side and contact 15 through a conductor 2l, and from Contact 15 to contact 1st and thence to line 97 over con-- ductor 22. Line 97 includes'the windings ofthe restoring magnet G1; a continuationV et this circuit being to ground from the ram'e'ot' said magnet over the conductor 84, contact member 10, s'prmg 11 'and conductor 12. The energizing of magnet (31, of

course, withdraws its armature and permits i the armature GO to return to its normal po sltlon. i

means whereby the subscribers toll register may be read automatically from a distant station, as for example the central exchange. The register herein shown is otI a type designed for automatically transmitting a. reading of the accumulated calls over the line wires and so doing without destroying theV record set up, 7'.. c., wit-hout .re-setting the register. The manner in which the traveler stl reciprocates across Ythe counter wheels, and the vibratory movement imparted to the lever t5 thereby, has been explained. The vibration of lever 45` transmits impulses over a circuit which will new be described.

Referring to Fig. 2 there is shown bridged into the calling-in subscribers main lines V and R- conductors 98 and 9S.) which terminate in a spring jack 100. l.) designates as a whole the exchange operators reading set, whichcomprises a Iplug .101 adaptedto the spring jack, conductors 1.02 and 103 connect ed with the plug and recording device 104i, shown as a conventional Morse tape record cr, and the actuating magnet 105 of which'is in' lcircuit with the conductor 103, a receiver The conductor 108 extends to ground at through the mam battery thus, liorming a grounded circuit through the recording device 104 at the central station and the trans-4 mitter mechanism of the subscriber-'S register at the subscribers station, ,which may be traced as follows: from ground 4 at 7 5 through battery and over conductor 103 to ,the magnet 105, thence to the tip or vertical side o f the main line and over the latter to contact device 8 of the subscribers 'set, thence overconductor 90 to a conductor 109 connected therewith and which in turn leads'to and connects with the vibratory contact lever 43. The latter coperates Awith back contact 48 whichv is connected to ground at 69 throughl the fiexible conductor 70.

When a reading is to be taken, 'the operatorl at central calls uponv the subscriber to rotate the crank handle 51 of his register and release the same so .as to let it' return.

Asthe traveler starts forwardly it opens the circuit between contacts 49 and 49thus preventing `the operation of the transmitting mechanism from interfering or being interfered with by the other circuits. As hereinbefore described, the engaging device 45 of the vibratory lever oscillates idly during the 'forward movement of the ltraveler but im parts vibration to the lever during the return movement. The groups of contact pro-,- jeetions 37 on the counter wheels engaging the contact of the lever 'produce corre-r sponding makes and breaks of the ground to ground circuit last described, thus actuating the tape recorder and making a permanent record at central.7 'It will be noted that the taking of a reading in no Wise disturbs f, l the position of the counters, and it will be obvious therefore that the reading may be y repeated as many times as is deemed desirable.

' I t will be seen from` the foregoing description that I accomplish the several stated objects of the invention and provide acom-A paratively slmple and effective system for.

' storing magnet, an interlatching mechanism controlledvby said magnets, a circuit leading .through said cutting-out magnet and con;

trolled by contacts operableby a manually operated member ofthe telephone set, and a circuit leading through said restoring magnet and controlled by contacts operable by the manually moved tally device of the register.

settantt 2.- In combination with a subscribers telel phone set, a call register provided with a manually operable tall)v device, a controllingA relay comprising a cutting-out magnet, a restoring magnet, an interlatching mechanism controlled by rsaid magnets, a circuit leading through said cutting-out magnet and con- 4trolled by contacts loperable by a manually,v

operated member of the telephone set, agircuit leadin through said restorin magnet and contro led byl contacts operab e by the manually moved tally device of the register,

'arid another circuit leading through the restoring magnet and controlled by contacts operated by 'a manually operable part of the subscribers set. A

3. In a measured service system for telee 1ng the restoring magnet controlled by contacts operable by a manually movable part of the register, and a second circuit including the restoring magnet controlled by contacts opera-ted by a manually movable part of the telephone set, as and for the purpose set forth.

4. In a. measured service system for telephones, the combination of an automatic switch mechanism located ata central exchange, and aplurality of line wires and Subscribers sets connected with said switch mechanism, of a call register located at one of the subscribers stations, a controlling device operable to control a part of the telephone circu'it essential to communication with other subscribers, operative connections between said controlling device and the manually movable central-switch operating member of the subscribers telephone Whereby the talking circuit is disabled through operation of the controlling device, and

operative connections between the controlling device and themanually operable rallying member of the subscribers register whereby the recording of a call upon the register operates the controlling device to restore the talking connections.

5. In combination with an automatic telephone system, comprisin a central exchange switch, a plurality of su -stations each con-A nected with said central exchange switch,` a manually operable device at each sub-station for operating the central exchange switch and thereby seeurin selected Cormac-A tions and a hook-switch; o'. a measured servl ice system comprising a subscribers re ister provided with a manually operab e `rallying member, a contrclling'relay com` .prlsing a cutting-out ma et and a restorin magnet, a circmt including the windings o sai cuttin -out magnet controlled b con-l tacts opera le by the manually operab e centrai-switch operating memberof the substation equi ment, a talking circuit controlled by said cutting-out magnet, a circuit including saidV restorm magnetiand oontrolled by .contacts opera 1e bythe manuallyv l ymovable tally device of -the register, and

anotherlcircuitincludin the wmdings of said restoring magnet an controlled by con-` tacts operab e by the switch hook, as and i for the purpose set forth.

6. In combination with an automatic telephone system, comprising a central exchange switch mechanism2 a plurality of sub-stations connected with said switch mechanism and a telephone sub-station equipment at each sub-V I station comprising a manually operable f member for operating the central exchange switch, a hooklswitchfan annunciator and the usual talklng set,` a `controlling relay comprising cutting-out and restoring mag-i nets, a call register provided with a manually'operable tallying member, clrcuit connections including the cutting-out magnet and controlled by 'the `manuallyoperable central switch operating member, a talkin for the purpose set forth.

. HENRY PL oLnUsnN. Witnesses; ALmin'r H. Ganas, An'rnttm F.

contacts operab e by the hook-switch, as and by said restoring magnet, a circuit" magnet and con'- 

